One day i decided to take out my amplifier for my subs. All i did was disconnect the amp i didn't touch anything else i didn't even remove the wires from my truck. Now my stereo wont turn on and my compass/temperature thing on my ceiling wont turn on.

I pulled out my stereo, tested wires and my ignition wire isnt sending power to my head unit when i turn the vehicle on. I'm not to sure where to start with checking how to fix this. I assume this is also why my compass/temp isnt coming on as well. Is there a possible fuse i could have blown? maybe its a loose wire?

I also know my head unit works and gets power. i took its ignition wire and connected it to the power wire so i still have a stereo lol. i just have to turn it off and on maually it wont do so when i start and turn off the car obviously.

its a 2000 blazer zr2 2dr